/*
* Atheros AR71xx built-in ethernet mac driver
*
- * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Based on Atheros' AG7100 driver
#define __AG71XX_H
#include <linux/kernel.h>
+#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/phy.h>
#include <linux/skbuff.h>
#include <linux/dma-mapping.h>
+#include <linux/workqueue.h>
#include <linux/bitops.h>
#define ETH_FCS_LEN 4
#define AG71XX_DRV_NAME "ag71xx"
-#define AG71XX_DRV_VERSION "0.3.9"
-
-#define AG71XX_NAPI_TX 1
+#define AG71XX_DRV_VERSION "0.5.35"
#define AG71XX_NAPI_WEIGHT 64
+#define AG71XX_OOM_REFILL (1 + HZ/10)
#define AG71XX_INT_ERR (AG71XX_INT_RX_BE | AG71XX_INT_TX_BE)
#define AG71XX_INT_TX (AG71XX_INT_TX_PS)
#define AG71XX_INT_RX (AG71XX_INT_RX_PR | AG71XX_INT_RX_OF)
-#ifdef AG71XX_NAPI_TX
#define AG71XX_INT_POLL (AG71XX_INT_RX | AG71XX_INT_TX)
#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL)
-#else
-#define AG71XX_INT_POLL (AG71XX_INT_RX)
-#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL | AG71XX_INT_TX)
-#endif
#define AG71XX_TX_FIFO_LEN 2048
-#define AG71XX_TX_MTU_LEN 1536
+#define AG71XX_TX_MTU_LEN 1540
#define AG71XX_RX_PKT_RESERVE 64
#define AG71XX_RX_PKT_SIZE \
(AG71XX_RX_PKT_RESERVE + ETH_HLEN + ETH_FRAME_LEN + ETH_FCS_LEN)
#define AG71XX_RX_RING_SIZE 128
-#undef DEBUG
-#ifdef DEBUG
+#ifdef CONFIG_AG71XX_DEBUG
#define DBG(fmt, args...) printk(KERN_DEBUG fmt, ## args)
#else
#define DBG(fmt, args...) do {} while (0)
u32 ctrl;
#define DESC_EMPTY BIT(31)
#define DESC_MORE BIT(24)
-#define DESC_PKTLEN_M 0x1fff
+#define DESC_PKTLEN_M 0xfff
u32 next;
-};
+ u32 pad;
+} __attribute__((aligned(4)));
struct ag71xx_buf {
- struct sk_buff *skb;
+ struct sk_buff *skb;
+ struct ag71xx_desc *desc;
+ dma_addr_t dma_addr;
+ u32 pad;
};
struct ag71xx_ring {
struct ag71xx_buf *buf;
- struct ag71xx_desc *descs;
+ u8 *descs_cpu;
dma_addr_t descs_dma;
+ unsigned int desc_size;
unsigned int curr;
unsigned int dirty;
unsigned int size;
};
+struct ag71xx_mdio {
+ struct mii_bus *mii_bus;
+ int mii_irq[PHY_MAX_ADDR];
+ void __iomem *mdio_base;
+ struct ag71xx_mdio_platform_data *pdata;
+};
+
+struct ag71xx_int_stats {
+ unsigned long rx_pr;
+ unsigned long rx_be;
+ unsigned long rx_of;
+ unsigned long tx_ps;
+ unsigned long tx_be;
+ unsigned long tx_ur;
+ unsigned long total;
+};
+
+struct ag71xx_napi_stats {
+ unsigned long napi_calls;
+ unsigned long rx_count;
+ unsigned long rx_packets;
+ unsigned long rx_packets_max;
+ unsigned long tx_count;
+ unsigned long tx_packets;
+ unsigned long tx_packets_max;
+
+ unsigned long rx[AG71XX_NAPI_WEIGHT + 1];
+ unsigned long tx[AG71XX_NAPI_WEIGHT + 1];
+};
+
+struct ag71xx_debug {
+ struct dentry *debugfs_dir;
+ struct dentry *debugfs_int_stats;
+ struct dentry *debugfs_napi_stats;
+
+ struct ag71xx_int_stats int_stats;
+ struct ag71xx_napi_stats napi_stats;
+};
+
struct ag71xx {
void __iomem *mac_base;
void __iomem *mii_ctrl;
struct platform_device *pdev;
struct net_device *dev;
struct napi_struct napi;
+ u32 msg_enable;
struct ag71xx_ring rx_ring;
struct ag71xx_ring tx_ring;
+ struct mii_bus *mii_bus;
struct phy_device *phy_dev;
- struct mii_bus mii_bus;
+ void *phy_priv;
unsigned int link;
unsigned int speed;
- int duplex;
+ int duplex;
+
+ struct work_struct restart_work;
+ struct timer_list oom_timer;
+
+#ifdef CONFIG_AG71XX_DEBUG_FS
+ struct ag71xx_debug debug;
+#endif
};
extern struct ethtool_ops ag71xx_ethtool_ops;
+void ag71xx_link_adjust(struct ag71xx *ag);
+
+int ag71xx_mdio_driver_init(void) __init;
+void ag71xx_mdio_driver_exit(void);
-extern int ag71xx_mdio_init(struct ag71xx *ag, int id);
-extern void ag71xx_mdio_cleanup(struct ag71xx *ag);
-extern int ag71xx_mii_peek(struct ag71xx *ag);
-extern void ag71xx_mii_ctrl_set_if(struct ag71xx *ag, unsigned int mii_if);
-extern void ag71xx_mii_ctrl_set_speed(struct ag71xx *ag, unsigned int speed);
-extern void ag71xx_link_update(struct ag71xx *ag);
+int ag71xx_phy_connect(struct ag71xx *ag);
+void ag71xx_phy_disconnect(struct ag71xx *ag);
+void ag71xx_phy_start(struct ag71xx *ag);
+void ag71xx_phy_stop(struct ag71xx *ag);
static inline struct ag71xx_platform_data *ag71xx_get_pdata(struct ag71xx *ag)
{
return ag->pdev->dev.platform_data;
}
-static inline void ag71xx_wr(struct ag71xx *ag, unsigned reg, u32 value)
-{
- __raw_writel(value, ag->mac_base + reg);
-}
-
-static inline u32 ag71xx_rr(struct ag71xx *ag, unsigned reg)
-{
- return __raw_readl(ag->mac_base + reg);
-}
-
-static inline void ag71xx_sb(struct ag71xx *ag, unsigned reg, u32 mask)
-{
- void __iomem *r = ag->mac_base + reg;
-
- __raw_writel(__raw_readl(r) | mask, r);
-}
-
-static inline void ag71xx_cb(struct ag71xx *ag, unsigned reg, u32 mask)
-{
- void __iomem *r = ag->mac_base + reg;
-
- __raw_writel(__raw_readl(r) & ~mask, r);
-}
-
static inline int ag71xx_desc_empty(struct ag71xx_desc *desc)
{
- return ((desc->ctrl & DESC_EMPTY) != 0);
+ return (desc->ctrl & DESC_EMPTY) != 0;
}
static inline int ag71xx_desc_pktlen(struct ag71xx_desc *desc)
{
- return (desc->ctrl & DESC_PKTLEN_M);
+ return desc->ctrl & DESC_PKTLEN_M;
}
/* Register offsets */
#define AG71XX_REG_INT_ENABLE 0x0198
#define AG71XX_REG_INT_STATUS 0x019c
-#define MAC_CFG1_TXE BIT(0)
-#define MAC_CFG1_STX BIT(1)
-#define MAC_CFG1_RXE BIT(2)
-#define MAC_CFG1_SRX BIT(3)
-#define MAC_CFG1_LB BIT(8)
-#define MAC_CFG1_SR BIT(31)
+#define MAC_CFG1_TXE BIT(0) /* Tx Enable */
+#define MAC_CFG1_STX BIT(1) /* Synchronize Tx Enable */
+#define MAC_CFG1_RXE BIT(2) /* Rx Enable */
+#define MAC_CFG1_SRX BIT(3) /* Synchronize Rx Enable */
+#define MAC_CFG1_TFC BIT(4) /* Tx Flow Control Enable */
+#define MAC_CFG1_RFC BIT(5) /* Rx Flow Control Enable */
+#define MAC_CFG1_LB BIT(8) /* Loopback mode */
+#define MAC_CFG1_SR BIT(31) /* Soft Reset */
#define MAC_CFG2_FDX BIT(0)
#define MAC_CFG2_CRC_EN BIT(1)
#define MAC_CFG2_IF_1000 BIT(9)
#define MAC_CFG2_IF_10_100 BIT(8)
+#define FIFO_CFG0_WTM BIT(0) /* Watermark Module */
+#define FIFO_CFG0_RXS BIT(1) /* Rx System Module */
+#define FIFO_CFG0_RXF BIT(2) /* Rx Fabric Module */
+#define FIFO_CFG0_TXS BIT(3) /* Tx System Module */
+#define FIFO_CFG0_TXF BIT(4) /* Tx Fabric Module */
+#define FIFO_CFG0_ALL (FIFO_CFG0_WTM | FIFO_CFG0_RXS | FIFO_CFG0_RXF \
+ | FIFO_CFG0_TXS | FIFO_CFG0_TXF)
+
+#define FIFO_CFG0_ENABLE_SHIFT 8
+
+#define FIFO_CFG4_DE BIT(0) /* Drop Event */
+#define FIFO_CFG4_DV BIT(1) /* RX_DV Event */
+#define FIFO_CFG4_FC BIT(2) /* False Carrier */
+#define FIFO_CFG4_CE BIT(3) /* Code Error */
+#define FIFO_CFG4_CR BIT(4) /* CRC error */
+#define FIFO_CFG4_LM BIT(5) /* Length Mismatch */
+#define FIFO_CFG4_LO BIT(6) /* Length out of range */
+#define FIFO_CFG4_OK BIT(7) /* Packet is OK */
+#define FIFO_CFG4_MC BIT(8) /* Multicast Packet */
+#define FIFO_CFG4_BC BIT(9) /* Broadcast Packet */
+#define FIFO_CFG4_DR BIT(10) /* Dribble */
+#define FIFO_CFG4_LE BIT(11) /* Long Event */
+#define FIFO_CFG4_CF BIT(12) /* Control Frame */
+#define FIFO_CFG4_PF BIT(13) /* Pause Frame */
+#define FIFO_CFG4_UO BIT(14) /* Unsupported Opcode */
+#define FIFO_CFG4_VT BIT(15) /* VLAN tag detected */
+#define FIFO_CFG4_FT BIT(16) /* Frame Truncated */
+#define FIFO_CFG4_UC BIT(17) /* Unicast Packet */
+
+#define FIFO_CFG5_DE BIT(0) /* Drop Event */
+#define FIFO_CFG5_DV BIT(1) /* RX_DV Event */
+#define FIFO_CFG5_FC BIT(2) /* False Carrier */
+#define FIFO_CFG5_CE BIT(3) /* Code Error */
+#define FIFO_CFG5_LM BIT(4) /* Length Mismatch */
+#define FIFO_CFG5_LO BIT(5) /* Length Out of Range */
+#define FIFO_CFG5_OK BIT(6) /* Packet is OK */
+#define FIFO_CFG5_MC BIT(7) /* Multicast Packet */
+#define FIFO_CFG5_BC BIT(8) /* Broadcast Packet */
+#define FIFO_CFG5_DR BIT(9) /* Dribble */
+#define FIFO_CFG5_CF BIT(10) /* Control Frame */
+#define FIFO_CFG5_PF BIT(11) /* Pause Frame */
+#define FIFO_CFG5_UO BIT(12) /* Unsupported Opcode */
+#define FIFO_CFG5_VT BIT(13) /* VLAN tag detected */
+#define FIFO_CFG5_LE BIT(14) /* Long Event */
+#define FIFO_CFG5_FT BIT(15) /* Frame Truncated */
+#define FIFO_CFG5_16 BIT(16) /* unknown */
+#define FIFO_CFG5_17 BIT(17) /* unknown */
+#define FIFO_CFG5_SF BIT(18) /* Short Frame */
+#define FIFO_CFG5_BM BIT(19) /* Byte Mode */
+
#define AG71XX_INT_TX_PS BIT(0)
#define AG71XX_INT_TX_UR BIT(1)
#define AG71XX_INT_TX_BE BIT(3)
#define MII_CFG_CLK_DIV_14 5
#define MII_CFG_CLK_DIV_20 6
#define MII_CFG_CLK_DIV_28 7
+#define MII_CFG_RESET BIT(31)
#define MII_CMD_WRITE 0x0
#define MII_CMD_READ 0x1
-#define MII_ADDR_S 8
+#define MII_ADDR_SHIFT 8
#define MII_IND_BUSY BIT(0)
#define MII_IND_INVALID BIT(2)
-#define TX_CTRL_TXE BIT(0)
-
-#define TX_STATUS_PS BIT(0)
-#define TX_STATUS_UR BIT(1)
-#define TX_STATUS_BE BIT(3)
+#define TX_CTRL_TXE BIT(0) /* Tx Enable */
-#define RX_CTRL_RXE BIT(0)
+#define TX_STATUS_PS BIT(0) /* Packet Sent */
+#define TX_STATUS_UR BIT(1) /* Tx Underrun */
+#define TX_STATUS_BE BIT(3) /* Bus Error */
-#define RX_STATUS_PR BIT(0)
-#define RX_STATUS_OF BIT(1)
-#define RX_STATUS_BE BIT(3)
+#define RX_CTRL_RXE BIT(0) /* Rx Enable */
-#define FIFO_CFG5_BYTE_PER_CLK BIT(19)
+#define RX_STATUS_PR BIT(0) /* Packet Received */
+#define RX_STATUS_OF BIT(2) /* Rx Overflow */
+#define RX_STATUS_BE BIT(3) /* Bus Error */
-#define MII_CTRL_SPEED_S 4
-#define MII_CTRL_SPEED_M 3
+#define MII_CTRL_IF_MASK 3
+#define MII_CTRL_SPEED_SHIFT 4
+#define MII_CTRL_SPEED_MASK 3
#define MII_CTRL_SPEED_10 0
#define MII_CTRL_SPEED_100 1
#define MII_CTRL_SPEED_1000 2
+static inline void ag71xx_check_reg_offset(struct ag71xx *ag, unsigned reg)
+{
+ switch (reg) {
+ case AG71XX_REG_MAC_CFG1 ... AG71XX_REG_MAC_MFL:
+ case AG71XX_REG_MAC_IFCTL ... AG71XX_REG_INT_STATUS:
+ break;
+
+ default:
+ BUG();
+ }
+}
+
+static inline void ag71xx_wr(struct ag71xx *ag, unsigned reg, u32 value)
+{
+ ag71xx_check_reg_offset(ag, reg);
+
+ __raw_writel(value, ag->mac_base + reg);
+ /* flush write */
+ (void) __raw_readl(ag->mac_base + reg);
+}
+
+static inline u32 ag71xx_rr(struct ag71xx *ag, unsigned reg)
+{
+ ag71xx_check_reg_offset(ag, reg);
+
+ return __raw_readl(ag->mac_base + reg);
+}
+
+static inline void ag71xx_sb(struct ag71xx *ag, unsigned reg, u32 mask)
+{
+ void __iomem *r;
+
+ ag71xx_check_reg_offset(ag, reg);
+
+ r = ag->mac_base + reg;
+ __raw_writel(__raw_readl(r) | mask, r);
+ /* flush write */
+ (void)__raw_readl(r);
+}
+
+static inline void ag71xx_cb(struct ag71xx *ag, unsigned reg, u32 mask)
+{
+ void __iomem *r;
+
+ ag71xx_check_reg_offset(ag, reg);
+
+ r = ag->mac_base + reg;
+ __raw_writel(__raw_readl(r) & ~mask, r);
+ /* flush write */
+ (void) __raw_readl(r);
+}
+
static inline void ag71xx_int_enable(struct ag71xx *ag, u32 ints)
{
ag71xx_sb(ag, AG71XX_REG_INT_ENABLE, ints);
ag71xx_cb(ag, AG71XX_REG_INT_ENABLE, ints);
}
+static inline void ag71xx_mii_ctrl_wr(struct ag71xx *ag, u32 value)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+
+ if (pdata->is_ar724x)
+ return;
+
+ __raw_writel(value, ag->mii_ctrl);
+
+ /* flush write */
+ __raw_readl(ag->mii_ctrl);
+}
+
+static inline u32 ag71xx_mii_ctrl_rr(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+
+ if (pdata->is_ar724x)
+ return 0xffffffff;
+
+ return __raw_readl(ag->mii_ctrl);
+}
+
+static inline void ag71xx_mii_ctrl_set_if(struct ag71xx *ag,
+ unsigned int mii_if)
+{
+ u32 t;
+
+ t = ag71xx_mii_ctrl_rr(ag);
+ t &= ~(MII_CTRL_IF_MASK);
+ t |= (mii_if & MII_CTRL_IF_MASK);
+ ag71xx_mii_ctrl_wr(ag, t);
+}
+
+static inline void ag71xx_mii_ctrl_set_speed(struct ag71xx *ag,
+ unsigned int speed)
+{
+ u32 t;
+
+ t = ag71xx_mii_ctrl_rr(ag);
+ t &= ~(MII_CTRL_SPEED_MASK << MII_CTRL_SPEED_SHIFT);
+ t |= (speed & MII_CTRL_SPEED_MASK) << MII_CTRL_SPEED_SHIFT;
+ ag71xx_mii_ctrl_wr(ag, t);
+}
+
+#ifdef CONFIG_AG71XX_AR8216_SUPPORT
+void ag71xx_add_ar8216_header(struct ag71xx *ag, struct sk_buff *skb);
+int ag71xx_remove_ar8216_header(struct ag71xx *ag, struct sk_buff *skb,
+ int pktlen);
+static inline int ag71xx_has_ar8216(struct ag71xx *ag)
+{
+ return ag71xx_get_pdata(ag)->has_ar8216;
+}
+#else
+static inline void ag71xx_add_ar8216_header(struct ag71xx *ag,
+ struct sk_buff *skb)
+{
+}
+
+static inline int ag71xx_remove_ar8216_header(struct ag71xx *ag,
+ struct sk_buff *skb,
+ int pktlen)
+{
+ return 0;
+}
+static inline int ag71xx_has_ar8216(struct ag71xx *ag)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_AG71XX_DEBUG_FS
+int ag71xx_debugfs_root_init(void);
+void ag71xx_debugfs_root_exit(void);
+int ag71xx_debugfs_init(struct ag71xx *ag);
+void ag71xx_debugfs_exit(struct ag71xx *ag);
+void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status);
+void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag, int rx, int tx);
+#else
+static inline int ag71xx_debugfs_root_init(void) { return 0; }
+static inline void ag71xx_debugfs_root_exit(void) {}
+static inline int ag71xx_debugfs_init(struct ag71xx *ag) { return 0; }
+static inline void ag71xx_debugfs_exit(struct ag71xx *ag) {}
+static inline void ag71xx_debugfs_update_int_stats(struct ag71xx *ag,
+ u32 status) {}
+static inline void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag,
+ int rx, int tx) {}
+#endif /* CONFIG_AG71XX_DEBUG_FS */
+
+void ag71xx_ar7240_start(struct ag71xx *ag);
+void ag71xx_ar7240_stop(struct ag71xx *ag);
+int ag71xx_ar7240_init(struct ag71xx *ag);
+void ag71xx_ar7240_cleanup(struct ag71xx *ag);
+
#endif /* _AG71XX_H */
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